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Math Challenge I-A Spring 2019 Week 4

 
 
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Re: Math Challenge I-A Spring 2019 Week 4
by Areteem Professor - Friday, 22 March 2019, 6:37 PM
 

This question wants you to compare the rule for divisibility for $10$ that you found in part (a), and the divisibility rules for $2$ and $5$. Remember a number is divisible by $2$ if it ends in $2$, $4$, $6$, $8$, or $0$, and is divisible by $5$ if it ends in $0$ or $5$.